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Auxiliary Equipment

Auxiliary Equipment delivery of liquid oxygen under pressure; it does not give all the requirements for the connection. Auxiliary Equipment Copies of C5 may be obtained from the B.S.I. Sales Branch, 2 Park Street, London, W.l ; price 4s. each. Details of Some Components Used for Subsidiary BRITISH-MADE SYSTEM FOR BOEING RAIN REPELLENT Services in Aircraft, Missiles and Space Vehicles Field Aircraft Services Ltd., licensees for the Boeing rain repellent system, have announced the inclusion as MOBILE STEP PLATFORM minium 54. The immediate availability of these new optional equipment of a British made system developed fasteners will help designers solve problems in areas for the B.A.C. One-Eleven and fully approved as part The Aircraft Division of Martin Thomas Ltd., Hayes where high strength and creep resisting properties are of the aircraft. Road, Southall, Middlesex, manufacturers of Hi-Way required at elevated temperatures. Specified by Aer Lingus and Philippine Air Lines, the staging, have announced the introduction of the system is designed to deliver single momentary spurts Hi-Way mobile step platform. AQUACELS FOR HELICOPTERS of Boeing repellent type 3 'Rainboe' to the pilot's wind- The mobile step platform is a dual-purpose unit Investigation of a helicopter ditching in which a screens in flight, in rain, as needed, affording excellent which can be used either for aircraft entry or aircraft public figure lost his life led to a suspicion that the pilot vision through windscreens which remain maintenance. It is also suitable for use in aircraft passengers may have been unable to locate the air­ essentially dry even at 140 knots in torrential rain. stores, etc. It is manufactured from ½ in. nominal bore craft's escape hatches in the dark conditions of immer­ Operating cost will generally be lower than for steel tubing, suitably fabricated and welded to form sion. To overcome any such difficulty in future it has periodic replacement of wiper blades which, in any the basic chassis and top platform. been decided to identify each hatch by illuminating its case, are usually swamped by heavy rain catchment. The unit is provided with three standard 3 in. position and shape with a ring of low density lights Repellents vary in vigour and some are difficult to diameter by 1½ in. wide tread rubber wheels with two which switch on automatically as the helicopter enters apply. Short apron turn-round times, and rain, prevent fixed directional wheels fitted to the rear of the unit the water. pre-flight re-application of wax or paste repellents and a single castor fitted to the front. The unit incor­ The use of normal power supply was discounted for which, in any case, can lose efficiency while awaiting a porates a unique single-action locking device which is obvious reasons, but the answer was found in the rain encounter. brought into operation by simply treading on the McMurdo Aquacel which was originally developed as Boeing repellents, freshly applied and spread by rain an Admiralty requirement for submariner's lifejacket itself, afford repellency vigorous enough to virtually lights and is now widely used in ships and aircraft for eliminate windscreen icing (heat off) during freezing lifejackets and rafts. An Aquacel consists essentially rain encounters. Boeing have demonstrated photo­ of a polythene case containing silver chloride and graphically through repellent and non-repellent areas magnesium plates which form the poles of an electro­ of the same windscreen how a pilot's line of sight, in lytic cell when immersed in water. Being inert in the flight in rain, may be refracted downward as much as dry condition its life is indefinite but with the ingress 5 deg. by a wedge sectioned water pile-up on the non- of sea water it actuates immediately. repellent area. Visual references can appear as much The type ordered by Westland Aircraft Ltd. for as 200 ft. lower than they really are, resulting in an Wessex 3 helicopters, is the L35, a 3 volt cell which will undershoot landing approach under the correct glide- provide power for 1½ hours. It is situated forward in path. Any lateral refraction component could also the engine compartment to ensure immersion with delude a pilot into approaching to one side of the natural settlement. The battery is connected to 15 centre line, while correcting for non-existent cross lamps in parallel (5 lamps to each of three hatches) winds. and is provided with facilities for testing before flight. Sight refraction is noted as a probable contributory To ensure continuous activation in any attitude, the factor to the DC-7C accident at Istanbul in September cell is constructed of eight segments in such a way that 1964 (H.M.S.O. report C.A.P. 237). once immersed it will remain 'wet'. Installations for other aircraft are also being de­ SPIRAL SLIDE RULE veloped by the companies. Using a slide rule is a quick and convenient method This application is but one of many where water- of making a wide variety of calculations or for check­ activated batteries can be used to advantage. Further lowest step of the unit. This pressure raises the castor ing results obtained by other means. details are available from the manufacturers, The off the ground, allowing the unit to drop on to its However, the ordinary slide rule, because of its McMurdo Instrument Co. Ltd., Rodney Road, Ports­ rubber padded feet. To regain mobility of the unit, small size, is limited in its scope. Accuracy depends mouth. foot pressure is applied to the tread-plate fixed to the on judgment, but the longer the scales, the more locking mechanism, lifting the padded feet clear of the accurate are the results which can be read off directly CERAMIC-TO-METAL SEALS ground and replacing the castor. on the rule, because all the scale divisions are so much A wide range of Hi-Way mobile step platform units A method of joining ceramic to metal in such a larger. In the Otis King spiral slide rule the length of manner that the resulting joint is capable of with­ is available, ranging from two steps to eight steps in the scales is increased from approximately 6 in. to standing high temperatures in difficult operating height. All units with top platforms in excess of 6 ft. in 66 in. Yet the overall size of the calculator is no more environments has been developed by Elliott Electronic height have safety rails fitted. The units can be sup­ than 6 in. long by 1 in. diameter. Tubes Ltd., a member of the Elliott-Automation Group. plied in a wide choice of anti-skid treads and top The processes involved stem from the Company's need platforms to suit customers' requirements. to produce vacuum-tight envelopes for microwave RUBBER BONDED CORK SHEETS tubes, but these ceramic-metal seals are suitable for a wide range of other applications. They have, for A British Standard covering 'Rubber Bonded Cork example, uses as electrical lead-throughs, relay headers, Sheets for Aeronautical Purposes', F.66, has been semiconductor and microelectronic enclosures, coaxial published in the aircraft series. It replaces Ministry of windows, thermocouple seals, rocket exhausts and Aviation specification D.T.D. 762 and specifies re­ radomes. quirements for synthetic rubber bonded cork sheet jointing material from which gaskets can be cut or Having perfected the manufacturing techniques for stamped. producing ceramic-to-mctal seals, Elliott Electronic Tubes is now offering a design and manufacturing To ensure more uniform performance characteristics, service to industry at large. the new standard defines the material more specifically The ceramic used is a low-loss 97 per cent pure than the D.T.D. specification. An additional test, for resistance to ester-based lubricating oil, has been in­ alumina which can be sealed to numerous metals cluded. For ordering purposes, the sheets are identified including copper, molybdenum and nickel-iron and by a code reference. Copies of F.66 may be obtained nickel-copper alloys, Ceramic-to-ceramic coaxial seals from the B.S.I. Sales Branch, 2 Park Street, London, in which the layer of metallizing acts as the conductor W.l, price 5s. each. can also be produced. The seals are tested for vacuum-tightness with an NEW RIVET FOR THE AEROSPACE Elliott mass spectrometer leak detector and, using INDUSTRY appropriate brazing alloys, have been cycled to 700 The Hiduminium 54 self-plugging rivet has been deg. C. Seals of up to 14 in. diameter can be produced designed and perfected specially to meet the need for and the manufacture of yet larger seals is under a blind, high strength, low creep rivet which can be investigation. easily and consistently placed. It shows a marked Further details of the facilities available are obtain­ improvement in strength at elevated temperatures able from Elliott Electronic Tubes Ltd., Elstree Way, The spiral form of the scales round the cylinder when compared with other existing aluminium alloy Borehamwood, Herts. enables a remarkable degree of accuracy to be ob­ fasteners. tained in dealing with the many every-day problems LIQUID OXYGEN REPLENISHMENT Following Avdel's successes with titanium and stain­ that arise in aircraft engineering. COUPLINGS FOR AIRCRAFT The calculator is produced in two models-Model less steel self-plugging rivets it was perhaps logical that K for all problems involving multiplication, division, this development should follow. One of the major Published as one of a series of recommendations for proportion, costs, percentages and foreign exchange advantages of the new rivet as far as heat treatment is aircraft ground servicing connections suitable for calculations, and Model L, which provides in addition concerned is that it is placed in the 'as supplied' adoption on an international basis is a new British logarithm scales for calculating roots and powers of condition. Standard giving 'Mating Dimensions for Liquid numbers. A fully descriptive leaflet is available from To complete their existing range of fasteners in Oxygen Replenishment Couplings for Aircraft, C5'. the manufacturers, Carbic Ltd., 54 Dundonald Road, Hiduminium 54, Avdel are going ahead with the pro­ In scope, the standard relates only to those features London, S.W.19. duction of Chobert rivets and Avdeloks in Hidu­ affecting the coupling to an aircraft of hose for the 289 September 1965 http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Aircraft Engineering and Aerospace Technology Emerald Publishing

Auxiliary Equipment

Aircraft Engineering and Aerospace Technology , Volume 37 (9): 1 – Sep 1, 1965

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Publisher
Emerald Publishing
Copyright
Copyright © Emerald Group Publishing Limited
ISSN
0002-2667
DOI
10.1108/eb034075
Publisher site
See Article on Publisher Site

Abstract

delivery of liquid oxygen under pressure; it does not give all the requirements for the connection. Auxiliary Equipment Copies of C5 may be obtained from the B.S.I. Sales Branch, 2 Park Street, London, W.l ; price 4s. each. Details of Some Components Used for Subsidiary BRITISH-MADE SYSTEM FOR BOEING RAIN REPELLENT Services in Aircraft, Missiles and Space Vehicles Field Aircraft Services Ltd., licensees for the Boeing rain repellent system, have announced the inclusion as MOBILE STEP PLATFORM minium 54. The immediate availability of these new optional equipment of a British made system developed fasteners will help designers solve problems in areas for the B.A.C. One-Eleven and fully approved as part The Aircraft Division of Martin Thomas Ltd., Hayes where high strength and creep resisting properties are of the aircraft. Road, Southall, Middlesex, manufacturers of Hi-Way required at elevated temperatures. Specified by Aer Lingus and Philippine Air Lines, the staging, have announced the introduction of the system is designed to deliver single momentary spurts Hi-Way mobile step platform. AQUACELS FOR HELICOPTERS of Boeing repellent type 3 'Rainboe' to the pilot's wind- The mobile step platform is a dual-purpose unit Investigation of a helicopter ditching in which a screens in flight, in rain, as needed, affording excellent which can be used either for aircraft entry or aircraft public figure lost his life led to a suspicion that the pilot vision through windscreens which remain maintenance. It is also suitable for use in aircraft passengers may have been unable to locate the air­ essentially dry even at 140 knots in torrential rain. stores, etc. It is manufactured from ½ in. nominal bore craft's escape hatches in the dark conditions of immer­ Operating cost will generally be lower than for steel tubing, suitably fabricated and welded to form sion. To overcome any such difficulty in future it has periodic replacement of wiper blades which, in any the basic chassis and top platform. been decided to identify each hatch by illuminating its case, are usually swamped by heavy rain catchment. The unit is provided with three standard 3 in. position and shape with a ring of low density lights Repellents vary in vigour and some are difficult to diameter by 1½ in. wide tread rubber wheels with two which switch on automatically as the helicopter enters apply. Short apron turn-round times, and rain, prevent fixed directional wheels fitted to the rear of the unit the water. pre-flight re-application of wax or paste repellents and a single castor fitted to the front. The unit incor­ The use of normal power supply was discounted for which, in any case, can lose efficiency while awaiting a porates a unique single-action locking device which is obvious reasons, but the answer was found in the rain encounter. brought into operation by simply treading on the McMurdo Aquacel which was originally developed as Boeing repellents, freshly applied and spread by rain an Admiralty requirement for submariner's lifejacket itself, afford repellency vigorous enough to virtually lights and is now widely used in ships and aircraft for eliminate windscreen icing (heat off) during freezing lifejackets and rafts. An Aquacel consists essentially rain encounters. Boeing have demonstrated photo­ of a polythene case containing silver chloride and graphically through repellent and non-repellent areas magnesium plates which form the poles of an electro­ of the same windscreen how a pilot's line of sight, in lytic cell when immersed in water. Being inert in the flight in rain, may be refracted downward as much as dry condition its life is indefinite but with the ingress 5 deg. by a wedge sectioned water pile-up on the non- of sea water it actuates immediately. repellent area. Visual references can appear as much The type ordered by Westland Aircraft Ltd. for as 200 ft. lower than they really are, resulting in an Wessex 3 helicopters, is the L35, a 3 volt cell which will undershoot landing approach under the correct glide- provide power for 1½ hours. It is situated forward in path. Any lateral refraction component could also the engine compartment to ensure immersion with delude a pilot into approaching to one side of the natural settlement. The battery is connected to 15 centre line, while correcting for non-existent cross lamps in parallel (5 lamps to each of three hatches) winds. and is provided with facilities for testing before flight. Sight refraction is noted as a probable contributory To ensure continuous activation in any attitude, the factor to the DC-7C accident at Istanbul in September cell is constructed of eight segments in such a way that 1964 (H.M.S.O. report C.A.P. 237). once immersed it will remain 'wet'. Installations for other aircraft are also being de­ SPIRAL SLIDE RULE veloped by the companies. Using a slide rule is a quick and convenient method This application is but one of many where water- of making a wide variety of calculations or for check­ activated batteries can be used to advantage. Further lowest step of the unit. This pressure raises the castor ing results obtained by other means. details are available from the manufacturers, The off the ground, allowing the unit to drop on to its However, the ordinary slide rule, because of its McMurdo Instrument Co. Ltd., Rodney Road, Ports­ rubber padded feet. To regain mobility of the unit, small size, is limited in its scope. Accuracy depends mouth. foot pressure is applied to the tread-plate fixed to the on judgment, but the longer the scales, the more locking mechanism, lifting the padded feet clear of the accurate are the results which can be read off directly CERAMIC-TO-METAL SEALS ground and replacing the castor. on the rule, because all the scale divisions are so much A wide range of Hi-Way mobile step platform units A method of joining ceramic to metal in such a larger. In the Otis King spiral slide rule the length of manner that the resulting joint is capable of with­ is available, ranging from two steps to eight steps in the scales is increased from approximately 6 in. to standing high temperatures in difficult operating height. All units with top platforms in excess of 6 ft. in 66 in. Yet the overall size of the calculator is no more environments has been developed by Elliott Electronic height have safety rails fitted. The units can be sup­ than 6 in. long by 1 in. diameter. Tubes Ltd., a member of the Elliott-Automation Group. plied in a wide choice of anti-skid treads and top The processes involved stem from the Company's need platforms to suit customers' requirements. to produce vacuum-tight envelopes for microwave RUBBER BONDED CORK SHEETS tubes, but these ceramic-metal seals are suitable for a wide range of other applications. They have, for A British Standard covering 'Rubber Bonded Cork example, uses as electrical lead-throughs, relay headers, Sheets for Aeronautical Purposes', F.66, has been semiconductor and microelectronic enclosures, coaxial published in the aircraft series. It replaces Ministry of windows, thermocouple seals, rocket exhausts and Aviation specification D.T.D. 762 and specifies re­ radomes. quirements for synthetic rubber bonded cork sheet jointing material from which gaskets can be cut or Having perfected the manufacturing techniques for stamped. producing ceramic-to-mctal seals, Elliott Electronic Tubes is now offering a design and manufacturing To ensure more uniform performance characteristics, service to industry at large. the new standard defines the material more specifically The ceramic used is a low-loss 97 per cent pure than the D.T.D. specification. An additional test, for resistance to ester-based lubricating oil, has been in­ alumina which can be sealed to numerous metals cluded. For ordering purposes, the sheets are identified including copper, molybdenum and nickel-iron and by a code reference. Copies of F.66 may be obtained nickel-copper alloys, Ceramic-to-ceramic coaxial seals from the B.S.I. Sales Branch, 2 Park Street, London, in which the layer of metallizing acts as the conductor W.l, price 5s. each. can also be produced. The seals are tested for vacuum-tightness with an NEW RIVET FOR THE AEROSPACE Elliott mass spectrometer leak detector and, using INDUSTRY appropriate brazing alloys, have been cycled to 700 The Hiduminium 54 self-plugging rivet has been deg. C. Seals of up to 14 in. diameter can be produced designed and perfected specially to meet the need for and the manufacture of yet larger seals is under a blind, high strength, low creep rivet which can be investigation. easily and consistently placed. It shows a marked Further details of the facilities available are obtain­ improvement in strength at elevated temperatures able from Elliott Electronic Tubes Ltd., Elstree Way, The spiral form of the scales round the cylinder when compared with other existing aluminium alloy Borehamwood, Herts. enables a remarkable degree of accuracy to be ob­ fasteners. tained in dealing with the many every-day problems LIQUID OXYGEN REPLENISHMENT Following Avdel's successes with titanium and stain­ that arise in aircraft engineering. COUPLINGS FOR AIRCRAFT The calculator is produced in two models-Model less steel self-plugging rivets it was perhaps logical that K for all problems involving multiplication, division, this development should follow. One of the major Published as one of a series of recommendations for proportion, costs, percentages and foreign exchange advantages of the new rivet as far as heat treatment is aircraft ground servicing connections suitable for calculations, and Model L, which provides in addition concerned is that it is placed in the 'as supplied' adoption on an international basis is a new British logarithm scales for calculating roots and powers of condition. Standard giving 'Mating Dimensions for Liquid numbers. A fully descriptive leaflet is available from To complete their existing range of fasteners in Oxygen Replenishment Couplings for Aircraft, C5'. the manufacturers, Carbic Ltd., 54 Dundonald Road, Hiduminium 54, Avdel are going ahead with the pro­ In scope, the standard relates only to those features London, S.W.19. duction of Chobert rivets and Avdeloks in Hidu­ affecting the coupling to an aircraft of hose for the 289 September 1965

Journal

Aircraft Engineering and Aerospace TechnologyEmerald Publishing

Published: Sep 1, 1965

There are no references for this article.